change histogram graph to smooth curve

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hamza
hamza 2014-5-15
评论： hamza 2014-5-15
I have this code to sum 10 independent uniform random variables to verify the central limit theorem but I could not change the code to get a curve plot instead of the histogram this is the code
uniform_RVs = [];
sample_averages = [];
random_draw = [];
for i = 1:500
for j = 0:20
random_draw = [random_draw 4.*rand];
end
sample_averages = [sample_averages mean(random_draw)];
uniform_RVs = [uniform_RVs random_draw];
random_draw = [];
end
figure(1)
hist(uniform_RVs, 25)
xlabel('Observation')
ylabel('Frequency')
figure(2)
hist(sample_averages, 25)
xlabel('Observation')
ylabel('Frequency')
sample_mean = mean(sample_averages)
sample_var = var(sample_averages)
Please help me

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采纳的回答

Dishant Arora
Dishant Arora 2014-5-15
histfit fits normally distributed data. For details refer documentation.
doc histfit

更多回答（1 个）

hamza
hamza 2014-5-15
I need to get curve plot like this: http://rgm3.lab.nig.ac.jp/RGM-files/R_CC/result/TeachingDemos/clt.examp.Rd_003_large.png
but I do not know which command to use

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